Valid Nix store path names

All files and folders in /nix/store match the regular expression

[0-9a-z]{32}-[-.+_?=0-9a-zA-Z]+

• [0-9a-f]{32} is the hash
• [-.+_?=0-9a-zA-Z]+ is the name

See also

• Nix package manager#Internals
• https://discourse.nixos.org/t/clarification-on-package-names-and-versions/9819/8
• function checkName in https://github.com/NixOS/nix/blob/master/src/libstore/path.cc